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A crucially important material parameter for all amorphous solids is theyield stress, which is the value of the stress for which the material yields toplastic flow when it is strained quasi-statically at zero temperature. It isdifficult in laboratory experiments to determine what parameters of theinter-particle potential effect the value of the yield stress. Here we use theversatility of numerical simulations to study the dependence of the yieldstress on the parameters of the inter-particle potential. We find a very simpledependence on the fundamental scales which characterize the repulsive andattractive parts of the potential respectively, and offer a scaling theory thatcollapses the data for widely different potentials and in different spacedimensions.

What Determines the Yield Stress in Amorphous Solids?